Hello David, little problem with the descreen filter in gmic for gimp.
I am on Xubuntu 20.04. I used to use the appimage for gimp 2.10.25 with gmic included. There I could use the descreen filter without problems.
Then I reinstalled the same Xubuntu on an new ssd. When I use the same appimage the descreen filter ends up with an error, see screenshot.
When I use the standard installed Gimp v. 2.10.18 with gimp-gmic from the repos, descreen works fine.
Any idea what’s going on? I use descreen on a regular base to eliminate the raster that is seen on scans from books.